diff --git a/.swift-version b/.swift-version
index 5186d07..7d5c902 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-4.0
+4.1
diff --git a/Package.swift b/Package.swift
index 97b4eae..5d66919 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:4.0
+// swift-tools-version:4.1
 
 /**
  *  ShellOut